81. Input mode is used for . . . . . . . .
82. Which of the following action can be taken by a process upon receiving a signal?
83. Which command is used for saving and quitting the editor simultaneously?
84. Which of the following key options is used with tar to create an archive?
85. System calls and library functions are same.
86. Which of the following signals can neither be ignored nor catch?
87. To assign execute permission to the user (owner) for a file named file01.txt, which of the following command will be used?
88. Which of the following functions are used for obtaining and setting the value of environment variables?
89. To create a space for entering a new line of text above the current cursor location, 'O' command is used.
90. To copy (yank) lines in vi editor, we use . . . . . . . . command.
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